Deloitte NLA Interview Experience 2025

Based on recent candidate experiences, the Deloitte NLA interview process for freshers in 2025 includes multiple rounds designed to evaluate both technical and soft skills, covering cognitive abilities, coding, and communication.

Round 1: Cognitive and Technical Assessment

This stage consists of multiple sections evaluating:

Verbal Ability
Logical Reasoning
Numerical Ability
Technical Test (focused on computer fundamentals, programming concepts, databases, and networking)

Some candidates noted that only Verbal Ability, Logical Reasoning, and Numerical Ability tests were present, with no technical section, depending on the role or academic background.

This is an elimination round, and candidates must clear all sections to progress. The difficulty level is easy to moderate, with a higher emphasis on reasoning and verbal skills over numerical ability.

1. Language Skills (English Proficiency)

This section assesses English grammar, vocabulary, sentence structure, and comprehension abilities. Candidates are required to complete questions like:

Fill in the blanks
Sentence correction
Synonyms and antonyms
Reading comprehension
Error spotting

Sample Question

Identify the error in the given sentence:
Lisa is shivering because it’s the coldest week of December; the temperature has dropped to -5 degrees.

Options:
A. Week of December
B. Lisa is shivering
C. The temperature has dropped
D. Because it’s the coldest

Parts of the given sentence have been given as options. One of them contains a grammatical error. Select the option that has the error.
The project has progressed to such a level as the team members are unsure whether they can complete it on time.

Options:
A. can complete it on time
B. The project has progressed
C. such a level as
D. whether they

Each sentence in the given paragraph contains four underlined phrases. Three of these phrases have been correctly used and one has been incorrectly used. Select the phrase from among the following options that best replaces the INCORRECT phrase in the sentence.
The dedication of the scientists to conduct groundbreaking research has led them to excel, and they have made up for major breakthroughs in various fields.

Options:
A. Made major breakthroughs
B. To carrying out
C. Commitment
D. In various disciplines

2. General Aptitude (Quantitative & Logical Reasoning)

This section includes numerical and logical reasoning questions, which test the candidate’s problem-solving abilities. Topics covered include:

Percentage, Ratio & Proportion
Profit & Loss, Simple & Compound Interest
Number Series, Coding-Decoding
Data Interpretation (Charts, Graphs, and Tables)
Blood Relations, Seating Arrangements, Puzzles

Sample Question

What will be the remainder when the square of the LCM of 3, 9, 18, and 27 is divided by the square of the HCF of 34, 85, and 187?

Options:
A. 92
B. 94
C. 96
D. 98

A wooden rectangular prism undergoes modifications where its length is increased by 12%, its width is decreased by 9%, and its height is increased by 4%. What is the percentage change (correct to two decimal places) in its volume?

Options:
A. Increases by 6.24%
B. Increases by 1.52%
C. Decreases by 1.52%
D. Decreases by 6.24%

The present ages of four persons are in the ratio 3:5:7:9. The average of their ages six years ago was 32 years. What will be the average age (in years) of the youngest and the oldest among them, four years from now?

Options:
A. 45
B. 42
C. 46
D. 48

3. Technical Skills (MCQs & Conceptual Knowledge)

This section tests a candidate’s understanding of core technical concepts, including:

Computer Science Fundamentals
Networking & Cybersecurity
Cloud Computing Basics
Operating Systems & DBMS
Object-Oriented Programming

Sample Question

Which of the following is NOT a type of software development model?

Options:
A. Waterfall Model
B. Agile Model
C. Spiral Model
D. Execution Model

What type of software testing is performed without executing the program?

Options:
A. Functional Testing
B. Regression Testing
C. Static Code Analysis
D. Performance Testing

Which testing technique involves analyzing code structure, conditions, and execution paths?

Options:
A. White Box Testing
B. Black Box Testing
C. Usability Testing
D. Performance Testing

4. Technical Skills (Coding Round)

Candidates are required to solve coding problems in languages like C, C++, Java, Python, or JavaScript. The problems generally test:

String Manipulation
Arrays & Linked Lists
Searching & Sorting Algorithms
Recursion
Dynamic Programming (For advanced roles)

Sample Question

Write a function to check if a given string is a palindrome.

def is_palindrome(s):
    return s == s[::-1]

print(is_palindrome("radar"))  # Output: True
print(is_palindrome("hello"))  # Output: False

Practice Now

Round 2: Technical Interview

If a candidate clears the online assessment, they proceed to the technical interview. This round evaluates in-depth knowledge of technical concepts and problem-solving skills.

Topics Covered

Data Structures & Algorithms (Stacks, Queues, Trees, Graphs)
Object-Oriented Programming (OOP) Concepts (Encapsulation, Polymorphism, Inheritance)
Database Management Systems (DBMS) (SQL Queries, Normalization)
Networking Basics (OSI Model, TCP/IP, Routing)
Operating Systems (Processes, Threads, Memory Management)
Projects & Internships Discussion

Sample Technical Questions

What is the difference between an abstract class and an interface in Java?
- Abstract Class: Can have both defined and abstract methods. Supports multiple levels of inheritance.
- Interface: Only contains method signatures (until Java 8+). Supports multiple inheritance.
How would you optimize a SQL query that is running slow?
- Use indexing, optimize WHERE conditions, avoid SELECT *, use JOIN instead of subqueries, analyze execution plans.
Explain different types of normalization in DBMS.
- 1NF: Eliminate duplicate columns
- 2NF: Remove partial dependencies
- 3NF: Remove transitive dependencies
- BCNF: Stronger version of 3NF
How does the OS handle deadlocks?
- Deadlock Prevention, Detection, Avoidance, Recovery Methods
Write a function to implement binary search.

def binary_search(arr, target):
    left, right = 0, len(arr) - 1
    while left <= right:
        mid = (left + right) // 2
        if arr[mid] == target:
            return mid
        elif arr[mid] < target:
            left = mid + 1
        else:
            right = mid - 1
    return -1

print(binary_search([1, 3, 5, 7, 9], 5))  # Output: 2

Practice Now

Round 3: HR Interview

The final round assesses a candidate’s communication skills, personality, and ability to align with Deloitte’s work culture. It includes behavioral and situational questions.

Common HR Questions

Tell me about yourself.
Keep it concise: Name, education, skills, projects, and career goals.
Why do you want to join Deloitte?
Mention Deloitte’s reputation, innovation, and learning opportunities.
Where do you see yourself in five years?
Talk about career growth, upskilling, and contributions to Deloitte.
Describe a time you worked under pressure.
Explain a real-life situation using the STAR method (Situation, Task, Action, Result).
What are your strengths and weaknesses?
Strengths: Problem-solving, adaptability, leadership. Weaknesses: Choose something minor and explain how you're improving it.